Megane GT DCi whine

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kingears
Posts: 7
Joined: Sat Dec 17, 2011 11:08 pm
Currently Drives:: 2007 Megane GT DCI 150
Location: Gosport, Hampshire

Megane GT DCi whine

Postby kingears » Mon Aug 27, 2012 8:29 pm

Hi guys,

I searched on here (and other Renault forums) for my problem but none seem to match what I'm experiencing.

My 2007 GT DCi which has done 36k, has developed a strange whine when I go over 50 mph (in 3,4,5,6 gears) that stops when the clutch is dipped.

The bizarre thing is when on the motorway, there is a sweet spot when adjusting the accelerator pedal, where the whine goes. If i ease off the pedal it comes back and if i apply more pressure it comes back. Its gotten louder over the past few weeks and is extremely annoying on long drives (have to have the radio on 25 too drown it out)

So far I'm thinking it could be the Turbo bearing or clutch bearing, but I'm not an expert on these things and haven't got the money to be throwing at it too change countless parts to try and solve it as I'm getting married soon.

I'm hoping someone can help narrow it down for me as I've heard the horror stories of Turbo failures wrecking engines :sad

AlexB
Driving Legend
Posts: 4312
Joined: Tue Mar 22, 2005 8:17 pm
Currently Drives:: Renaultsport R.S.250 Cup

Re: Megane GT DCi whine

Postby AlexB » Mon Aug 27, 2012 9:21 pm

Check gearbox oil, or have it checked for you. As you will have to spend time on this anyway, changing oil to something like Motul Gear 300 75w90 is advisable. I hope it is not late yet... I bought mine from opieoils. Do not try random stuff - these gearboxes need oil that is thin when cold.
AlexB
(no, a different AlexB)

kingears
Posts: 7
Joined: Sat Dec 17, 2011 11:08 pm
Currently Drives:: 2007 Megane GT DCI 150
Location: Gosport, Hampshire

Re: Megane GT DCi whine

Postby kingears » Mon Aug 27, 2012 9:29 pm

Thanks for the reply :-)

Will get that checked when I can.

At first I thought it was road noise from the tires, but as I said it goes when the clutch is dipped, and has got progressively louder over time.

Noises are such a pain too diagnose :(

Ryan

kingears
Posts: 7
Joined: Sat Dec 17, 2011 11:08 pm
Currently Drives:: 2007 Megane GT DCI 150
Location: Gosport, Hampshire

Re: Megane GT DCi whine

Postby kingears » Wed Aug 29, 2012 4:33 pm

Had the gearbox oil checked and topped up a little and the noise is still present :sad

I'm guessing I'm going too have to get the Turbo checked for the bearing, unless anyone has any other suggestions?

Thanks

Ryan

davelowe
Driving Legend
Posts: 3136
Joined: Thu May 10, 2007 3:40 pm

Re: Megane GT DCi whine

Postby davelowe » Wed Aug 29, 2012 10:24 pm

Record the noise and stick it on youtube.
Silver 08 plate 5dr 1.5dci Dynamique 106 Tech Run (re-mapped)

Red 03 plate 5dr 1.9 Dynamique dci120

Best advice for Megane owners: sell it before it bankrupts you!

kingears
Posts: 7
Joined: Sat Dec 17, 2011 11:08 pm
Currently Drives:: 2007 Megane GT DCI 150
Location: Gosport, Hampshire

Re: Megane GT DCi whine

Postby kingears » Thu Aug 30, 2012 10:41 am

davelowe wrote:Record the noise and stick it on youtube.


That's the next thing on my list to do. I'll try and do that tonight hopefully.

Ryan

kingears
Posts: 7
Joined: Sat Dec 17, 2011 11:08 pm
Currently Drives:: 2007 Megane GT DCI 150
Location: Gosport, Hampshire

Re: Megane GT DCi whine

Postby kingears » Thu Aug 30, 2012 10:10 pm

I managed to get out and try and record the "whine" in question.

The video isn't great as I was holding the phone in my left hand and changing gear. You'll also have to filter out the rattles from the dash (they drive me bonkers as well)

https://www.youtube.com/watch?v=A5RnN7j ... ata_player

In the video I say when the whine is present, just so you all know :-) Its also a LOT louder than it sounds in the video.

Ryan

AlexB
Driving Legend
Posts: 4312
Joined: Tue Mar 22, 2005 8:17 pm
Currently Drives:: Renaultsport R.S.250 Cup

Re: Megane GT DCi whine

Postby AlexB » Fri Aug 31, 2012 8:17 pm

Hi Ryan,
This sounds like a transmission whine. If it is the case, it can be cured either by changing the oil or the gearbox... Try the oil which I listed - the gearbox will feel much better. It is Ester based.
AlexB
(no, a different AlexB)

davelowe
Driving Legend
Posts: 3136
Joined: Thu May 10, 2007 3:40 pm

Re: Megane GT DCi whine

Postby davelowe » Fri Aug 31, 2012 10:24 pm

I agree with Alex. The whine is proportional to the road speed so far as I can tell. Service the transmission and see if it still sounds like straight cut gears. I have no idea if the GT has a magnetic drain plug, but if it has, check it for metal shavings. Hope there are none.

Excellent video, by the way. I think we should have more of these to aid diagnostics.
Silver 08 plate 5dr 1.5dci Dynamique 106 Tech Run (re-mapped)

Red 03 plate 5dr 1.9 Dynamique dci120

Best advice for Megane owners: sell it before it bankrupts you!

kingears
Posts: 7
Joined: Sat Dec 17, 2011 11:08 pm
Currently Drives:: 2007 Megane GT DCI 150
Location: Gosport, Hampshire

Re: Megane GT DCi whine

Postby kingears » Sat Sep 01, 2012 3:31 pm

Thanks guys

As soon as my wedding is out the way i'll take it to my local garage and get them too change the oil to the one you recommended, until then earplugs it is lol.

You're too kind about the video dave :-) i didn't see the point of recording it without pointing out which noise i was refering too in the actual video. Trying to explain it afterwards, defeats the point of making a video lol

Ryan

davelowe
Driving Legend
Posts: 3136
Joined: Thu May 10, 2007 3:40 pm

Re: Megane GT DCi whine

Postby davelowe » Mon Sep 03, 2012 10:28 pm

I like to think that we can tell the difference between a turbo spooling up and something else :D

Let us know how you get on (both with the car and the missus!)
Silver 08 plate 5dr 1.5dci Dynamique 106 Tech Run (re-mapped)

Red 03 plate 5dr 1.9 Dynamique dci120

Best advice for Megane owners: sell it before it bankrupts you!

kingears
Posts: 7
Joined: Sat Dec 17, 2011 11:08 pm
Currently Drives:: 2007 Megane GT DCI 150
Location: Gosport, Hampshire

Re: Megane GT DCi whine

Postby kingears » Tue Sep 04, 2012 8:04 pm

Cheers dave, :cool:

I'll post in here once I've got the gearbox oil changed, and whether it cured my whine.

Ryan

gwyndaf81
Posts: 2
Joined: Tue Jul 13, 2010 9:48 pm

Re: Megane GT DCi whine

Postby gwyndaf81 » Wed May 22, 2013 6:35 pm

Did you get that whine cured?

I also have a 2007 2.0dci GT and have the exact same whine I heard from your sound clip. Mine has covered 78k miles and started the whine about 8wks ago. It's driving me mad. I've swooped the tyres round and had the wheel bearings checked and still it persists.

Can you let me know what caused the whine if yours is fixed please?

Thanks
Paul

AlexB
Driving Legend
Posts: 4312
Joined: Tue Mar 22, 2005 8:17 pm
Currently Drives:: Renaultsport R.S.250 Cup

Re: Megane GT DCi whine

Postby AlexB » Fri May 24, 2013 8:32 pm

Change the oil as I wrote earlier. You are causing damage to the transmission every day.

The original oil in Meg2 gearboxes is very thin, which is not good for the diff.
AlexB
(no, a different AlexB)


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